VARIABLE INTEREST ENTITIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Variable Interest Entity [Line Items]
Total portfolio	$ 139,709,633		$ 139,709,633		$ 162,112,965
Loans 90 or more days delinquent or in foreclosure
Variable Interest Entity [Line Items]
Total portfolio	1,147,385		1,147,385		1,305,532
Variable Interest Entity, Not Primary Beneficiary | Joint Venture
Variable Interest Entity [Line Items]
Total assets in VIEs	17,605		17,605		20,783
Share in net earnings of joint ventures	4,600	$ 3,000	10,800	$ 8,100
Variable Interest Entity, Not Primary Beneficiary | Loans 90 or more days delinquent or in foreclosure
Variable Interest Entity [Line Items]
Total portfolio	1,600		1,600
Variable Interest Entity, Not Primary Beneficiary | Pledged as Collateral
Variable Interest Entity [Line Items]
Total assets in VIEs	$ 2,340,730		$ 2,340,730		$ 1,424,857